ER9X Mixing to Control Hydraulic - Help Required

[Tech1uk]

Hi All,

Been a while since I've setup some mixes and to be honest I've forgotten a little.

Basically I have Turnigy 9XR running EX9R and I'm setting up a track loader with Hydraulics

I have 2 Hydraulic rams on Ch3 & Ch4 which are controlled via a standard servo, in a valve block

Now the Hydraulic pump is on a brushless ESC which only operates in the forward direction on Ch5. This is set to a switch so goes straight to +100

What I'm trying to setup is when I operate Ch3 or Ch4 the pump will cut in Ch5, this will safe me switching it on each time and over pressuring the system if left on.

Any help would be great

Cheers

Steve

[MikeB]

We may need a bit more information to fully answer, but something like this. I'm assuming CH3 and CH4 are at 0% (centre) and move either side, and CH5 is -100% when the pump is off and +100% when it is on.
Set up a couple of logical switches:
L1 |v|<val CH3 1
L2 |v|<val CH4 1
Then combine them:
L3 OR L1 L2
Now just use L3 as the switch to turn ch5 on:
CH5: +100% FULL switch(L3)

Mike

[Tech1uk]

Thanks Mike,

Sorry I should have added all the information to original post but your guess at my setup was correct.

Thanks for mixers, works a treat.
I just need to add a few adjustments like I don't want the pump to run at 100% when in normal operation, but add another "boost" switch for 100% if required.

I should be able to work the rest out now, if not I will be back

Thanks again,

Merry Xmas

Steve

[jhsa]

Ypu could do even better, you could change the pump's speed using a pot, and adjust it to what you need. It would still turn on an off with the sticks.

[jhsa]

To control the pump's speed try this:

Ch05 -100% FULL
R +100% P1 Switch(L3)

"R" means that it is a "Replace" mix. It will replace the mix above it, but in the same channel. P1 is Pot 1
Adjust P1 to change the pump's, speed. I guess the pump has a brushless speed controller, right?
João

[Tech1uk]

Thanks João

This does work OK but to make it safer I would like to have P1 to only work if the Gear switch is on.

Is that possible ?

Cheers

Steve

[jhsa]

Try adding another Logical switch
L4 AND L3 GEA

Then on Ch5

Ch05 -100% FULL
R +100% FULL Switch (L3)
R +100% P1 Switch(L4)


João

[Tech1uk]

Many thanks, I have all that side of things sorted now.

Also very random issue, I can't get into Model setup or radio setup screen.
If I remember right menu long from any of the 5 main screens? doesn't work for some reason!

Any ideas

[MikeB]

RIGHT LONG to the model select screen, LEFT LONG to the radio setup screen.
Depending on the revision of er9x you are using, MENU LONG on a main screen will bring up a "popup" selection where you may choose these.

Mike

[jhsa]

I always use the popup. Can concentrate on other stuff when programming a model.
For me it was a bless as I can never remember key combinations.

[Tech1uk]

Thanks both, I've found the menus

I'm on a quite an old version r813

If I was to update to the latest now would all model settings still work OK ??
Any point in updating too? Only got 2 trucks and 3 diggers on there

Cheers

Steve

[jhsa]

I think so, but backup your eeprom settings using eepe anyway before you update the radio..

João

[Tech1uk]

Hi All,

I'm still having one issue here that I can't seem to get a round so I'm hoping some one can point me in the right direction.

I have the following setup and is working OK,

Mixer

CH03 +100%Ele
CH04 +100%Ail
CH05 +50%s Offset(50%)
CH06 +30%FULL Switch(ID0)
R +0%FULL Switch(ID1)
R -50%FULL Switch(ID2)
R +100%FULL Switch(L3 )
R -100%P1 Switch(L4 )

Custom Switch

SW1 CH3| < 1
SW2 CH4| < 1
SW3 L1 OR L2
SW4 L3 AND GEA

So on Ch3 & Ch4 I have the servos for operating the hydraulic valves
Ch6 is the pump for the hydraulics

Now I have set the ID1/2/3 switch to have different weight so the pump will run at a set speed depending on the switch position.
Then I have P1 set on gear switch on so I can set the pump speed to what ever I like and it will run at all times regardless of Ch3 or Ch4 position.
Now the issue I have if I have gear switch on and pump set to max 100% as soon as I move Ch3 or Ch4 the pump will revert back to the IDx set speed.

How can I make this so the IDx is ignored and Ch3/Ch4 will run at the defined speed I have set on P1 via gear?

Hope that makes sense,but I've probably made a hash of this

Happy New Year all
Cheers

Steve

[MikeB]

Use:
R -100% P1 Switch(GEA)
I think.

Also, should SW3 be:
SW3 L1 AND L2
So the pump is off if BOTH CH3 and CH4 are at 0% ?

Mike

[Tech1uk]

Thanks Mike,

I did work out R -100% P1 Switch(GEA) yesterday evening after I walked a way from it for a bit, but thanks anyway

Sometimes I just look to deep when really it is very simple

I've tried changing the OR to AND on SW3 but the both operate in the same way so I've left that for now.

For now I have everything I need and the TX is setup in the way I want it so thanks everyone for your help.

All the best for 2020

Steve

[Tech1uk]

Hi All,

Dug out bit of an old thread but I'm in need of help again.

Basically got a new setup now with 3 Hydraulic rams on Ch5 Ch6 & Ch7 Brushless ESC for pump is on Ch8 which is -100% when the pump is off and +100% when it is on.

I have the following setup and is working OK but I want to change it

Mixers

CH05 +100%Ele
CH06 +100%Ail
CH07 +100%Thr Switch(!THR)
CH08 +10%FULL Switch(ID0)
R -50%FULL Switch(ID1)
R -100%FULL Switch(ID2)
R +100%FULL Switch(L4 )

Limits

CH06 0.0 -100 100 INV
CH07 0.0 -100 100 INV
CH08 0.0 -100 100 INV

Custom Switch

SW1 CH5| < 1
SW2 CH6| < 1
SW3 CH7| < 1
SW4 L1 AND L2 And L3

What I'm trying to do is have P3 to control the pump speed and then ID1 would be P3 +25% & P3 ID2 +50%
Then on top of this I would like the ELE switch to be a kill switch, like a throttle cut.

I've tried a few different way and struggling.

Any ideas or am I asking for the impossible ?

Cheers

Steve

[MikeB]

I suggest using the ELE switch as a safety switch on CH 08, exactly like a throttle cut.

This should all be possible. Try something like:
CH09: +100% P3 Offset(+25%)
then use:
R +100% CH09 Switch(ID1) instead of R -50%FULL Switch(ID1) on channel 8.
and use something similar on channel 10 for the ID2 requirement.

Mike

[Tech1uk]

Thanks Mike,

I'm 90% there so got CH9 and CH10 now setup and kill switch on ELE on CH8, so all working.

Final bit I need is for CH8 to run soon as P3 is moved with CH5/6/7 in the neutral position. This is so P3 ESC on CH8 is maintaining a minimum pressure in the system for when CH5/6/7 is operated then it will ramp up to Ch9 or Ch10 pressure when then ID switch is set.

I think that makes sense

Cheers

Steve

[Tech1uk]

FIXED

CH05 +100%Ele
CH06 +100%Ail
CH07 +100%Thr Switch(!THR)
CH08 +100%P3
R +100%CH9 Switch(ID1)
R +100%CH10 Switch(ID2)
R +100%P3 Switch(L4 )
R +100%HALF Switch(ELE)
CH09 +100%P3 Offset(-25%)
CH10 +100%P3 Offset(-75%)

Custom Switch

SW1 CH5| < 1
SW2 CH6| < 1
SW3 CH7| < 1
SW4 L1 AND L2 And L3

Thanks Mike again for your help

Cheers

Steve

[MikeB]

No problem. I try to show the sort of thing you need, then you actually implement it so you learn/understand better what is happening.

Mike